Pneumatic valve.



A. J. TYLER.

PNEUMATIC VALVE.

APPLICATION FILED JULY 23.1912.

1 1%0,63, 7 Patented May 25, 1915.

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A. J. TYLER.

PNEUMATIC VALVE APPLICATION mm JULY 23.1912.

Patented May 25, 1915.

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To all whom it may concern Be it known that I, Anson J. TYLER, citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Pneumatic Valves, of which the following is a specification.

This invention relates to pneumatic valves and more particularly to that class of valves especially designed *for application to the tires of automobiles, bicycles and the like.

The primary object of the invention is to pneumatic tire valve, the conwhich is such that when the valve is moved to open position, a full charge or volume of air may be forced into the inner tube of the tire with very little friction and when the valve is closed, the latter will be firmly sealed" against back pressure.

A further-- object of the invention is to provide a valve, the folly enga ing nut of which may be detached from the threaded stem 01' casing without the necessity of first removing the valve cap and lug.

A further object is to provi e novel means for clamping the threaded stem or casing in enga ment with the inner tube of the tire, an means for anchoring the fixed end of said casing to the rim of the wheel.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and efiiciency, aswell as to reduce the cost of manufacture.

Further objects and advantages will appear in the following description, it being understood that various changes in form,

proportions and 'minordetails of construction may be resorted to within the scope of the appended claims.

For a full understanding of the invention and the merits thereof, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a side elevation of a pneumatic tire valve constructed in accordance .with the presentinvention, showing said valve in position on the felly of a wheel, the folly and inner tube of the tire being shown in section for the sake of clearness; Fig. 2 is a front elevation. the folly. and rim being omitted Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. l and looking Specification of Letters Patent.

enema May 25, 1915.

Application filed hiya-a, 1012. serial no. 711,125. I 1

in the direction of the arrows; Fig. 4 is a vertical sectional view of Fig. 1, showing the valve in closed position; Fig. 5 is a similar view with'the dust cap removed and showing the valve in 0 en position; Fig. 6 is a perspective view of the valve removed from the casin the plug bein also shown detached imme iately above sai valve; Fig. 7 is a detail vertical section view, showing a sli htly modified form of clamping member. orresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters. The improved inflation valve forming the subject matter of the present invention is principally designed for application to the tires of automobiles, bicycles and the like and by way of illustration is shown applied to an automobile wheel of the ordinary construction in which 5 designates the felly, 6 the rim and 7 the inner tube.

The device comprises a hollow stem or casing 8 having two of its sides provided with threads 9 and its othersides flattened at 10, said threads and flattened portions extending throughout the entire length of the casing. The lower end of the stem or casing 8 is provided with a longitudinal bore 11, the walls of which are threaded for engagement with the correspondingly threaded walls of a tubular member 12 carried by a clamping disk 13.

[Coacting with the clamping disk 13. is a mating disk 14, the latter being loosely mounted on a reduced cylindrical portion 15 on the lower end of the casing. The inner faces of the disks 13 and 14 are provided with annular ribs 16 adapted to bite into the inner tube and thus assist in firmly gripping the same. The lower disk 13' is preferably provided with spaced depressions 17 adapted to receive a. wrench or spanner for the purpose of adjusting said disk when socket 20 adapted to receive the correspondingly curved surface of a clamping nut 21 by which the ,clampin disk 14 is driven to ward the disk 13. The socket 20 not only serves to accommodate thenut 21 but also allowsthe parts to be compactly assembled.

Arranged within the casing 8, is a valve, the stem of which is preferably formed in two sections 22 and 23. Secured 'to or formed integral with the lower section 22, is a guidin member 24 having spaced ribs 25 formed t iereon and'defining intermediate grooves or channels 26 to permit the passa e of air to the inner tube of the tire. Sli

,ably mounted on the lower end of the stem vided with an annular flange 30 definin a pocket ofseat 31 for thereception of a vave indicated at 32. The valve 32 is conical in shape and formed of rubber or other suitable material, there being a projection 33 formed on the valve stem section 23 against which the reduced end of the valve 32 abuts.

incline .The upper valve stem section 23 is threaded at 84 in a correspondingly threaded socket formed in the guiding member 24 so as to permit the upper valve stem section 23 to be readily detached from the guiding member 24 when it is desired to repair or replace the valve 32. 4

Threaded in the upper end of the casing 8, is a dplug 35, the lower end of which is or beveled to form a conical valve seat 36 adapted to engage the valve 32 so as to prevent the escape of air after the tire has been inflated. Y The plug is provided with an annular enlargement 37 having oppositely disposed flattened faces so as topermit the plug to be readily grasped in the hand or with a suitable tool andiadjusted be to the casing 8. The lower face of the enlargement 3 is provided with a seating recess 38- for the r'eceptionof awasher or gasket 39, the walls of the recess 38 being preferably inclined laterally so'as to assistin preventing spreading of the materialconstituting the washer when the plu 35 is screwed home on the valve casing. per end of the plug 35 is extended longitudinally to form an exteriorly threaded nipple 40 adapted to receive a correspond: ingly threaded cap or closure 41. Seated in the cap 41, is a gasket 42 havin an opening therein forthe rece tion 0 the adjacent end of the upper va ve stem section 23.

Interposed between the guiding member he up- I 24 and cage 27, is a coil spring 43 which serves to normally and yieldably retain the valve 32 to its seat. It will here be noted that the ribs 25 on the guiding member ex+ tend longitudinally beyond the base thereof to form spaced lugs 44 which embrace the .convolutions at the adjacent end of the spring and serve to centerthe sprin on said guiding member. The other end 0 the coil sgring encircles a centering boss 45 forme on the upper portion of the cage 27 Attention is here called to the fact that when the valve 32 is moved to open position, a free unobstructed passage will be afforded forthe air through the casing 8 to, the inner tube of the tire, thus preventing friction and insurin a full charge of air at each inflation of t e tire. The ribs 25 not only serve to center and guide the member 24 when the upper section 23 of the valve stem is depressed, but also permit the passage of air between said ribs when the valve is moved to open position.

Lfounted for rotation on the valve casing '8, is a clampin nut 46 having oppositely disposed groove faces 47 in which are seated preferably leather washers 48. One of the washers 48 is adapted to bear against the felly 5 of the wheel, while the other forms a seat for a dust guard or cap, indicated at 49. The dust cap or guard, as well as the clamping nut 46, are preferably roughened so as to afiord a good hand grip whenadjusting the parts.

It will here be noted that the diameter of I the plug 35 and cap 41 is less than the diameter of the-clamping nut 46, so that the nut'46 may be readily unscrewcdfrom the valve casing 8 without the necessity of first removing the cap 41 and plug 35, when it is desired to detach the valve casing from or attach said valve casing to an automobile wheel. It'will also be noted that the valve seat 36 is formed directly on the lower end of the plug 35 so that the lug may be readily removed when it is esired to regrind the valve seat by merely grasping the flattened portion of the enlargement and rotating the plug with the fingers. It will be further noted that when the nut 46 is turned home against the inner circumference of the felly, the nut 21 will be drawn toward the felly and the win 19 of the bracket 18 forced against the mm.

In Fig. 7 of the drawings, there is illus- 1 trated a modified form of the inventionin which the lower disk 13' is formed integral with the lower end of the stem or easing 8,

the construction and operation of the device being otherwise similar to that shown in Fig. 1 of the drawin An extra clamping member may be emp oyed for retaining the valve in position on the inner tube of the tirefi'f'desired. 7

From the foregoing description, it will be seen that when the cap ii. is removed and the usual air hose or tube threaded on the nipple 40, the valve 32 will be unseated, thus allowing a full volume of air to flow through the passages 26 in the guiding member and throu h the openings in the cage into theinterior o the inner tube. The parts are so arranged that an unobstructed passage is afforded and friction therefore reduced to a minimum, thereby materially increasing the efficiency of the valve and permitting the tire to-be inflated in less time than heretofore and with much less energy on the part of the operator.

Having thus described the invention, what is claimed as new is:

1. A pneumatic valve includin a casing, a plug engaging the casing an provided with a valve seat, a guiding member disposed within the casing and provided with spaced ribs defining intermediate air passages, a sectional valve stem extending from the guiding member, a cage loosely mounted on one section of the valve stem, a valve carried by the other section of the stem, and a spring interposed between the (guiding member and cage for normally an yieldably holding the valve to its seat.

2. A pneumatic valve includin a casing, a plug engaging the casing an provided with a valve seat, a guiding member disposed within the casing and provided with spaced ribs defining intermediate air passages, a sectional stem extending from the uiding member, one section of said stem bemg threaded in an opening in the guiding member, a cage loosely mounted on one of the stem sections, a valve carried by the threaded stem section and a ring interposed between the guiding mem r and cage for normally and yieldably holding the valve to its seat.

I 3, A pneumatic valve including a casing, a slug threaded in one end of the casing an provided with a valve seat, a guiding member disposed within the casing and having an upstanding flange defining a depression, said guiding member being provided with spaced ribs forming intermediate air passages, a valve stem depending from the guiding member, a second valve-stem threaded in the guiding member and providedwith a projection, a valve seated in the -(ilepression of the guiding member and bearing against said projection, a cage slidably mounted on the first mentioned stem section, I

and a s ring interposed between the cage and gui g member. i

4. A pneumatic valve includin a casing a plug seated in the casing am? provided with a valve seat, a guiding member dis posed within the casing and provided with longitudinal ribs defining intermediate air passages, the ribs being extended below the bottom of the guiding member to form centering lugs, a valve stem formed integral with the guiding member *and having its lower end provided with a stop, a cage engagingsaid stop, the upper end of the guid-- 

